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[atlas] Need host with very large ping times
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Marat Khalili
mkh at rqc.ru
Fri May 26 17:14:06 CEST 2017
Very interesting research indeed! Section "ASes most prone to RTTs greater than 1 second" contained enough information for me to find these hosts, no need to contact authors. Quest complete, thank you! -- With Best Regards, Marat Khalili On 26/05/17 16:32, Emile Aben wrote: > Hi Marat, > > there are big datasets of results of people that did already ICMP scans > of the Internet, that contain timestamps, from which you could extract > hosts with large RTTs. > This is a scan from Univ. Michigan (as i understand it): > https://censys.io/data/0-icmp-echo_request-full_ipv4 > > This research paper: > http://conferences2.sigcomm.org/imc/2015/papers/p303.pdf > describes how they found IP addresses with high RTTs (5% of IP address > space that was probed had >5s RTT for 5% of the time). Maybe you can > contact the authors if you are interested in this data? > > hope this helps, > Emile Aben > RIPE NCC > > On 26/05/17 14:17, Marat Khalili wrote: >> Annika, Borja, thank you for the suggestions. I'll consider >> purpose-building such host, but still hope to stumble upon existing one >> (some remote observatory on a satellite link probably...) >> >> -- >> >> With Best Regards, >> Marat Khalili >> >> On 26/05/17 14:57, Annika Wickert wrote: >>> You could try to test with this tool: >>> https://github.com/tylertreat/comcast >>> >>> On 26.05.17 13:51, Marat Khalili wrote: >>>> I have an interesting problem: I need some host that doesn't mind >>>> being pinged but with several seconds of RTT (that's thousands >>>> milliseconds; from Moscow, but it probably doesn't matter). >>>> Amazingly, I could not easily find one. I even tried to ping-scan IP >>>> ranges of Antarctica, but those hosts that responded did so in >>>> fraction of a second. Not much luck with North Korea (mostly down), >>>> Taiwan (internet is much better than it used to be) and several other >>>> suspect countries. (Though I'm not sure my tests are correct, since >>>> firewall processing of such long response times is one of the things >>>> I'm trying to find out.) >>>> >>>> Is it possible to somehow find one using RIPE ATLAS, preferably >>>> without ping-scanning whole internet? Would be especially great if it >>>> responded to other types of ping beside ICMP. >>>> >>>> -- >>>> >>>> With Best Regards, >>>> Marat Khalili >>>> >>>> >>> >>
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